This is more of curiosity than real vital issue. Currently testing another antivirus, I can not really allow me to reinstall avast. I wanted to ask this question to testers mad, or those who have already experienced: what use is avast web shield and SpyBlocker same time is feasible? and this is what greatly slows down browsing, or rather lightly? This question is not metaphysical, but can be useful if we seek the best possible configuration regarding Levity + efficiency. Please help me more in this scenario by providing necessary information.